Today I went to Potomac River Running in Reston, Virginia, to get fitted for some new sneakers. My old ones were pretty worn out, and since my new workout routine has me spending lots of time on the treadmill, I figured an upgrade was in order. I'd heard about the custom fitting service the store provides, so decided to check it out—and it was definitely a different experience than picking up a pair at a big chain store. After measuring my foot the salesperson brought out shoes that were a half size larger (apparently, your feet swell when you run). I put on a "neutral" shoe that offered no extra support and ran on a treadmill while a video camera zoomed in on my feet. It was pretty cool to be able to analyze my gait onscreen. From watching the way I landed, the salesperson concluded that my foot rolls in a little bit, so I need a "light stability" sneaker. I tried on three different styles and bought the most comfortable pair, the Saucony Omni 8. They were on the expensive side—$115—but considering the amount of time I'm going to be wearing these shoes, it was totally worth it.